#include<iostream>
using namespace std;

int main()
{
  double fahrenheit;
  cout << " Enter a degree in Fahrenheit: ";
  cin >> fahrenheit;

  double celsius = (5.0 / 9) * (fahrenheit - 32);

  cout << "Fahrenheit " << fahrenheit << " is " <<
   celsius << " in Celsius." << endl;
   return 0;
}
